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w. H. EVERS.

MOLD FOR SEGMENTAL STRUCTURES.

APPLICATION men |)zc.24. 19m.

Patented June 3, 1919.

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ZTAL STRUCTURES.

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Apph'cobioi'i filed Danes: cr 1mg. Serial No. 2%,!25.

concrete arches sewers and other conduits 7 and the like, and has to!" its object to provide improved devices for tho production of such blocks 01' segments.

' It is we intention of the invention to provide means whereby these blocks or sejgmems can be molded, and afterwar used for the construction of arches, oulveris or she lilig, the purpose lacing to mold the blocksot s ccntral'plar t, from which theyczin he transported to the place where the structures are to be built, and by standardizing the sizes such structures can he rssdily built iii various forms and, the production has sdvimtagesas compared to the erection of molds andconstruction of the culverts or fthe like in situ, ascommonlypractised and roquiring special Work at the place.

The segments or blocks produced by the means to hedescriloed m be provided with interlocking features and may-also be reinforced. by 'moial, if desired, and may bo readily assembled by ordinary workmen.

The invention includes moons whereby the segmentsor sections can be molded in multipls, the forms-inciudiug a series of curved;

face plates which fit within each other, in

connectioi Wishen plates or pieces which are setup therewith, the Whole bein clamped together sfiasr lasing properly position'erl, sad. the cement can be pour'eci in the several molds at the some. time to form mul-' .tiple sogmonisof various sizes. The device ia-lso includes joined forms io roducs hell joints or other iufierlockmg JGHU'SS at the ends and. sides of the sections, so thahw hsn the blocks are assembled, a strong and rigid structure is produced. a

With these and other: ob ects in 'wcwqnhe invention is illustrated in she-accompanying drawings in which Figure 1 is s top viewofi 3! multiple mold set up according to she 1nvention. Figs. 2' and 3 are perspective views of difi'ercnt iorms of plates. Fig. 4 s a perspective mowof fillers or sections used to produceinterlockii g joints. Fig. 5 is a pcrspecsive view of one ofthe positioncrs used to hold the forms In proper position.

1 ig. 6 is a plsnview. of one of the multiple and planes. Fig. 3" fion. I

Roferi-ingspccifically to the drawings, 6 indicate a series of curved metal face plotcs which may he rolledmetal bent to proper shape. In Fig. 1 these are illustrated as is a plan of a modificasemicii'culsr in' section, but they'may he of any curvature desired and bent on a single radius for of being semi-circular; they may descrilic a round arches or on multiple rsdii tor parabolic or other-arches, r nd instead smaller segment of a curve as in Fig. 2. Or,

they m'av be tapered to describe the segment of the rust'um of Fig. 3.

in any event, thcy'are set up 'oneiinside the other, as indicatedin Fig. 1; to produce scone, as indicated ;in

o plurality of spaces therolrietwecn 1n which segmouis of difieront sizes can be; cast. They are preferably stood upright on edge, upon a;

suitable base. The spaces between." the plates are closed 4 at the ends by means of end plates 7, onfo of which is shown iii Fig. 6. These sud plates arc of sufficient width to ext ijd across all the spaces at each end, and in orcles to make interlocking joints s t tho side edges of the resulting blocks, the pisses have ofissts '8 extending along the same, these ofisets being spaced apart. according to fthe thickness-of tho blocks produced, whereby oitherv grooves or ribs are formed in said edges. The plates 7 are symmetrical and are reversed to'proclues a rib in one end of the blocksazid o groove in tho o" osiis cud 'es will appear from Fig. 1. T o segment-s11 and sud plates when set up are suitably clamped togehsr and the material i between the plates. V

To produce infri'erlocking recesses and. pro" ject-ions in the ends ofthe cast-segments or blocks, 1 provids segmental fillers which agree iii cross ssction with the shapeof the joinh'to be formed and thcscfillers 9 areset in position between the lobes 6, at theends thereof, the ends of the ass being'enga'ged in notches 10in opposite plates 7, both aft top tho mold stands assembled. ,Ino'rder to confine she i inersndhuier plates 6 I provide gmontaI-bsrsor fpositioners 11 the ends of edges of the and. and bottom thereof as spoured'inro the, Spaces 1 1 3 or the like when the plugs are cssomb e taken down.

plates?) are placed between the se mentel clef 4 i of segmental plates standing in. parallel 1 the Work.

When the multiple mold is thus up or assembled, the cement is poured, illlCl otter is set, the end. plates '2' are ran vctl.

15 releases the fillers and the segmeinal plates and the mold can then be taken down and the finished blocks removed. It is the intention'to have a number of standard shapes and sizes of culverts orurches to be con 2D structed and the blocks will be llmilE in all Vance and supplied w en and where necessztry. Insteutl of pro uoing curved blocks they may be made straight, for use risers to increase the capacity of a conduit or the 25 like by being interposed bet-ween the arch and the invert.

By the means described, multiple units can be cast at a great saving of time and labor and the molds can he quickly set up and The curvature, length anal other dimensions of the L lOlii may he incleii nitely multiplied by; the use of different plates.

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1 ll supported "7 nals to correspond with the chit-kneel of the lolock to he proclucet' and *5 rod 4 located h we anti em.- bedtlctl in the cement when the lilocl' is serving prior 1 zereto f Vilmt I claim is 1. A multiple mold, comprising a plura tion, end. plates lining; agest. the ends of said plates. and means said eml 2': mental plates to SPlLCG the some apart and support the lot-tor in position.

multiple mold comprising a plurality cc plates assembled side by side, end I fitting against the ends thereof, and members engaging said. end plates and extending along and between said. face plates and adapted to support the same in position and also form recesses in the cast.

A multiple mold comprising plurality of face plates standing side by side, cud plates fitting against the cnils thereof and provided with a plurality of offsets to produce ribs or grooves in the blocks cast, and fillers extending from one end plate to the other and located between the face plate; to support the same and also form recesses in the geld blocks.

l. A multiple mold comprising a plurality of puriillel face plates, end plates fitting against the ends thereof and having notch-ed ctlgoe, anti fillers engaging at their curls in said notches and extending between the face plates to support and space the some and also form recesses in the cast.

A mold comprising face plates, end plates at the ends thereof, and a rod extending between the face plates and bent to contactat various points therewith to support and epuoe the some.

3, A mold comprising face plates and end plates, and. fillers located in supporting relation betwcen the face plates and having interlocking engagement with the end plates.

7. A mohf. comprising a plurality of 'segthe (illilS of the face plates, in: oppot iereoi, and curved supporting c-Xtemling from one plate to the and between the face plates, to hold. t" n position.

ony whereof, I do zifiix my signal preeenci: two Witnesses.

'WlLlfllAlvl H. EVERS.

Anon face plates, entl plates extending 

